Car part.



.PATENTED NOV. 28, 1905.

" B. I. DODDS.

YG'AR PART.

APPL IUATION FILED PI 1B- 23. 1904.

l VNT OR I UNITED STATES PATENT OFFICE.

ETHAN I. DODDS, OF AVALON, PENNSYLVANIA, ASSIGNOR TO PRESSED STEEL OARCOMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORA- TION OF NEW JERSEY.

Specification of Letters Patent.

CAR PART.

Patented Nov. 28, 1905.

Application filed February 23, 1904:- Serial No. 194,645-

To will whom it may concern.-

'Be it known that I, ETHAN I. DODDS, of Avalon, Alle heny county,Pennsylvania, have invente a new and useful Improvement in Car Parts, ofwhich the following is a full, clear, and exact description, referencebeing had to the accom anying drawings, forming part of this spec-ication, in which' Figure 1 shows a blank from which a bolster is made inaccordance with my invention. Fig. 2 is a longitudinal section showingthe bolster, the section being'on the line II II of Fig. .3. Fig. 3 is aplan'view of the bolster. the line IV IV of Fig. 3, but on a largerscale. Fig. 5 is a similar section illustrating a modification, and Fi 6is a side elevation of a modification of ig. 3.

The pur ose of my invention is to provide a truck-b0 ster having greatstrength in proportion to its weight, which can be made cheaply, andwith a minimum waste of metal. In'Fig. 1 I show the blank 2 fromflwhichthe bolster is made. It is a flanged beamsection, either an I -beam or achannel,- beam, preferably a channel, which is slit along the web by twocuts 1) I), thus dividing the flanged blank into three membersnamely, amiddle or tension member 3 and two com ress on members 4 4, which havealong thelr outer edges the original flanges of the channel-section.Then by means of suitable dies I press the middlemember 3 inonedirection and the two outer flanged mem-,

bers 4 4 in the opposite direction, thus bringing the blank into thecondition shown in Fig. v2 and making the frame or body of the bolster.The bolster thus constituted is strengthened by the interposition of asuitable strut or member 5 between the members 4 4 and the middle member3, and the member 3 is reinforced and strengthened by applying to itreinforcing angle-pieces 6 6, as

shown in Fig. 4, thus imparting to it great rigidity and strength. Themembers 4 4 may be further strengthened by a tielate 7, extending fromend to end of the b0 ster, as

shown in Figs. 4 and 6.

Fig. 4 is a vertical cross-section on' In Figs. 2, 3, 4, and 6 I showthe bolster made with the original flanges 8 8 of the blank directedinwardly toward ,the member 3. The dies, however, may be constructed topress the member 3 in the opposite direction, and thus to leave theoriginal flanges 8 8 of the blank outwardly directed, as in Fig. 5.

Instead of the reinforcing-angles 6 6 (shown in Fig. 4) I may employ thereinforcing channelsection 6 along the outer face of the member. 3. Thisreinforcing-channel 6 may be either pressed or rolled, as desired. 1

The skilled car constructor will be able to modify the construction ofthe bolster in many ways without departing fromthe princi le of myinvention, since What I claim is 1. A bolster comprising outer membershavin rolled flanges in a lurality of planes at ang es to each other anda middle member bent away from said outer members; substantially asdescribed.

2. A bolster comprising outer members having lateral flanges for theattachment of a strut, a middle member bent away from two members, saidmiddle member being reinforced by an lattached flange or flanges;substantially as described.

4. A bolster having two members, the outer edges of which have rolledflanges, and a middle member bent away from said two members, saidmiddle member being reinforced by an attached flange or flanges, and

connected with the other -members by a strut; substantially asdescribed.

In testimony whereof I have hereunto set my hand February 20, 1904.

1 ETHAN I. DODDS.

Witnesses JOHN MILLER, I-I. M.'O0RWIN.

